go outside and use the gloves to open the door with green hand
use the spray bottle to reveal the lasers
use the staple on the right panel
place the ladder and use the lighter + cigarette to the fire alarm on top

back to the room that you open with code number
and get a fire axe

go to the room that you open with fingerprint
break the lock of fire exit door and exit

job well done ! now go down to the living floor of the hotel and search for the greeds apartment.
be careful and leave no evidence of your activity.